Stench-trap



(No ModeL).

-GQDUNSTAN -S'IENCH TRAP.

PATENT Enron.

GEORGE DUNsTAN, OE LOEAIN, OHIO.

STENCH-TRAP.

SPECIFICATION forming part of Letters Patent No. 543,617, dated July 30,1895. Application tiled March 9, 1894. Serial No. 503,030. v(No model.)

To all whom it may concern.-

Be it known that I, GEORGE DUNSTAN, a citizen of the United States,residing at Lorain, in the county of Lorain and State of Ohio, haveinvented'a new and useful Stench-Trap, of which the following is aspecification.

My invention relates to improvements in stench-traps, and has for itsobject to provide a simple, inexpensive, and efficient trap for sewers,sinks, and the like, to avoid the lodging of waste therein and preventthe escape of efiluvia.

A further object of my invention is to provide means whereby the partsor members thereof may be readily disconnected for the purpose ofcleaning without break-ing plumbers joints and arrange the parts to forma water-seal at each joint.

Further objects and advantages of the invention will appear in thefollowing description,and the novel features thereof will beparticularly pointed out in the appended claim.

In. the drawings, Figure l is a vertical central section of a trapembodying my invention. Fig. 2 is a horizontal section on the line 2 2of Fig. l.

Similar numerals of reference indicate corresponding parts in both theiigures of the drawings.

l designates a casing of bowl shape, provided at its upper edge with alateral flange 2'and at its lower end with an exteriorlythreaded thimble8, adapted to be screwed into the end of a sewer or waste pipe. 'Thiscasing is provided at its. upper edge, below the plane of the lateralflange 2, with a groove 4, formed by an inwardly-extending flange 5 andan upturned edge or rim 6.

7 represents a dat perforated or grated cap, provided at its peripherywith an integral depending iiange 8, which fits in the groove 4 andforms a water-seal, and also. provided within said flange with anintegral inverted trunco-conical conductor-neck 9, having at its lowerend an opening approximately equal with the bore of the thimble 3.

The casing is provided upon its inner sides with the spaced ribs lO,preferably three in number, the inner compoundly-curved edges of whichare convergent toward their lower ends, and between these ribs andsupported thereby is arranged a sealing-bowl ll, having anoutwardly-flared upper edge, as shown at l2, a raised or conical center14, and a han dle 15 connectedv to this raised center and extendingupward above the plane of the upper edge ofthe bowl.

The lower edge of the inverted trunco-conical neck extends below theplane ofthe upper edge of the bowl ll, thus 'forming a water-seal and atthe same time providing means for the ready exit of the contents.

All sharp angles are avoided `in the construction of the various partsof the trap Po prevent the lodging of matter therein, and whileeffective water-seals are provided the passage through the Vtrap iscomparatively unobstructed.

It will be seen, furthermore, that the various parts of the trap areremovable, whereby, when necessary, they may be detached and cleaned,or, if broken, replaced.

Various changes in the form, proportion,

and minor details of construction may be resorted to without departingfrom the spirit or sacrificing any of the advantages of the invention.

Having thus described my invention, l claim- As an improved article ofmanufacture, the herein shown and described stench trap, comprising abowl-shaped casing having its lower end contracted to be fitted into asewer or waste pipe, and having an interior annu-4 lar groove 4 at itstop, and having ribs 10 integral with and projecting from its inner sideand compoundly curved on their inner edges, a sealing bowl 1l havingimperforate `bottom and sides and removably supported within the casingupon the said ribs, a handle secured centrally to the sealing bowl andextending above the top edge thereof, and a flat perforate cap removablyfitted within the upper end of the casing and provided with an integraldepending flangel fitting within the said interior groove 4, and havingan integral depending inverted trunco conical neck projecting into thesealing bowl below the plane of its upper edge, substantially as and forthe purpose described.

In testimony that l claim the foregoing as my own l have hereto affixedmy signature in the presence of two witnesses.

GEORGE DUNSTAN. Witnesses:

ED. GILLMOEE, JOSEPH MoYLEs.

TOO

